Finding the Fourth Proportional to 8,287.73, 12,436.83 and 7,509.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287.73 : 12,436.83 = 7,509.32 : x
2. Step 2: Convert to fraction form
   8,287.73/12,436.83 = 7,509.32/x
3. Step 3: Cross multiply
   8,287.73x = 12,436.83 × 7,509.32
4. Step 4: Simplify right side
   8,287.73x = 93,392,074.07
5. Step 5: Solve for x
   x = 93,392,074.07/8,287.73
6. Step 6: Final answer
   x = 11,268.72